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    SubjectRe: [PATCH] mm: count only reclaimable lru pages
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    Hi, Wu.
    I already agreed this concept.
    Wow, It looks better than old. :)

    On Thu, Jul 16, 2009 at 10:34 PM, Wu Fengguang<fengguang.wu@intel.com> wrote:
    > global_lru_pages() / zone_lru_pages() can be used in two ways:
    > - to estimate max reclaimable pages in determine_dirtyable_memory()
    > - to calculate the slab scan ratio
    >
    > When swap is full or not present, the anon lru lists are not reclaimable
    > and thus won't be scanned. So the anon pages shall not be counted. Also
    > rename the function names to reflect the new meaning.
    >
    > It can greatly (and correctly) increase the slab scan rate under high memory
    > pressure (when most file pages have been reclaimed and swap is full/absent),
    > thus avoid possible false OOM kills.
    >
    > Cc: Minchan Kim <minchan.kim@gmail.com>
    > Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    > Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
    Reviewed-by: Minchan Kim <minchan.kim@gmail.com>


    --
    Kind regards,
    Minchan Kim


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